Which of the Following Examples Illustrates Coordination of Ideas

Which of the following examples illustrates coordination of ideas?

A) Marcus, who is a hard worker, always turns in thoroughly researched projects.
B) Marcus, who always turns in thoroughly researched projects, is a hard worker.
C) Marcus is a hard worker, and he always turns in thoroughly researched projects.
D) Although Marcus doesn't like working in groups, he always turns in thoroughly researched projects.
E) Marcus always turns in thoroughly researched projects, although he dislikes working in groups.